骰子大小的计算机

日本研制出一种世界上最小的计算机——“空间立方体”，这是一款专门为太空环境操作设计的计算机，可用于美国宇航局（NASA）、欧洲空间局（ESA）和日本宇航研发机构（JAXA）进行连接通信。     

Basic plasma processes in solar-terrestrial activities

Within the known universe,more than 99%of all observable matter is plasma,a state often highly dynamic and far from thermal,as well as mechanical,equilibrium.In particular,for our own solar-terrestrial system,various plasma active phenomena frequently occur such as solar flares,coronal plasma heating,solar wind acceleration,and coronal mass ejections in the solar atmosphere;interplanetary magnetic clouds and collisionless shock waves in interplanetary space;and geomagnetic     

Inventor装配环境下基于VBA和驱动约束的运动仿真

介绍了在Inventor装配环境下,基于集成的VBA和驱动约束实现三维仿真模拟.通过数字化的三维仿真模拟,可以有效地检查运动过程中的干涉以确保产品运行的可靠性.有效地缩短设计周期,提高设计的质量.